Provided herein are cementitious compositions including hydraulic cement, supplementary cementitious material, and/or self-cementing material. Such compositions may be made from carbonate brines. Methods and systems for making the compositions and using the compositions are also provided.
 Work described herein was made in whole or in part with Government support under Award Number: DE-FE0002472 awarded by the Department of Energy. The Government has certain rights in this invention.